US5197655A - Fine pitch solder application - Google Patents
Fine pitch solder application Download PDFInfo
- Publication number
- US5197655A US5197655A US07/894,491 US89449192A US5197655A US 5197655 A US5197655 A US 5197655A US 89449192 A US89449192 A US 89449192A US 5197655 A US5197655 A US 5197655A
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- US
- United States
- Prior art keywords
- solder
- lands
- platen
- foil
- heated
- Prior art date
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- Expired - Lifetime
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/06—Solder feeding devices; Solder melting pans
- B23K3/0607—Solder feeding devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4867—Applying pastes or inks, e.g. screen printing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies
- H01L24/75—Apparatus for connecting with bump connectors or layer connectors
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/046—Surface mounting
- H05K13/0465—Surface mounting by soldering
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3478—Applying solder preforms; Transferring prefabricated solder patterns
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3485—Applying solder paste, slurry or powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/40—Semiconductor devices
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- H—ELECTRICITY
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- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies and for methods related thereto
- H01L2224/741—Apparatus for manufacturing means for bonding, e.g. connectors
- H01L2224/742—Apparatus for manufacturing bump connectors
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies and for methods related thereto
- H01L2224/75—Apparatus for connecting with bump connectors or layer connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
- H01L2224/818—Bonding techniques
- H01L2224/81801—Soldering or alloying
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- H—ELECTRICITY
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01013—Aluminum [Al]
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- H01L2924/01029—Copper [Cu]
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- H01L2924/01033—Arsenic [As]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/0105—Tin [Sn]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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- H01L2924/01075—Rhenium [Re]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01082—Lead [Pb]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/0132—Binary Alloys
- H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/014—Solder alloys
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
- H05K2203/0108—Male die used for patterning, punching or transferring
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0278—Flat pressure, e.g. for connecting terminals with anisotropic conductive adhesive
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/03—Metal processing
- H05K2203/033—Punching metal foil, e.g. solder foil
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/0405—Solder foil, tape or wire
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/0415—Small preforms other than balls, e.g. discs, cylinders or pillars
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/043—Reflowing of solder coated conductors, not during connection of components, e.g. reflowing solder paste
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/05—Patterning and lithography; Masks; Details of resist
- H05K2203/0502—Patterning and lithography
- H05K2203/0528—Patterning during transfer, i.e. without preformed pattern, e.g. by using a die, a programmed tool or a laser
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/05—Patterning and lithography; Masks; Details of resist
- H05K2203/0502—Patterning and lithography
- H05K2203/0545—Pattern for applying drops or paste; Applying a pattern made of drops or paste
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
Definitions
- the present invention relates to application of solder to circuitized substrates for receiving surface mountable electronic components. More specifically, it relates to solder application to fine pitch lands comprising footprints for directly receiving chips for attachment.
- Patterns of lands, or footprints, to which electronic devices are to be connected are comprised of ever shrinking sites as the pitch (distance between) ever narrowing component leads decreases. The desired result is to apply solder only to lands. Otherwise, bridging occurs.
- current technology contemplates direct chip attachment (DCA) to circuitized substrates.
- DCA direct chip attachment
- footprint patterns are often in configurations other than perimetrical rectangles. Connections are necessary between outputs interior of the perimeter outline of a chip, as well as some surface mountable components.
- Prior art includes much directed to the broad problem of applying solder--paste or web borne film --to circuit lands.
- Prior art application methods include screening paste through a mask with apertures corresponding to individual lands in a footprint.
- the present invention provides a technique for applying solder to fine pitch lands without bridging, using a heated solder non-wettable platen to make solder adhere to lands in a simple, reliable, high yield method.
- solder paste is screened through a mask having apertures dimensioned and configured such that each overlays a plurality of lands.
- the heated platen is configured to have element(s) corresponding in size and shape to mask apertures. The platen contacts the screened solder for reflow whereby solder adheres to circuit lands.
- the present invention provides a heated solder non-wettable platen for contacting a film of solder positioned over a footprint on a circuit substrate.
- the heated platen is reciprocally movable and its active element(s) likewise correspond in size and shape to an area covering a plurality of lands comprising the solder receiving footprint site.
- solder non-wettable platen comprises plural individual platens. They may be arranged to correspond to some or all the lands associated with one or more footprints.
- the apparatus and method of the present invention provide for accurately applying predetermined amounts of solder to fine pitch leads.
- the invention is easily adapted for automated assembly. Further it allows for unused solder to be recycled.
- FIG. 1 is a schematic planar illustration of a printed circuit substrate including fine pitch lands
- FIG. 2 a illustrates solder paste screening
- FIG. 3 shows a heated platen for reflowing solder on the lands
- FIGS. 4 illustrate our solder foil application method
- FIG. 5 shows another apparatus for applying solder foil at footprint sites.
- FIG. 1 shows a portion of a planar schematic of a printed circuit substrate 2.
- substrate 2 On the surface of substrate 2 are copper lands 4. Lands 4 are typically about 4 mils wide and spaced apart on 12 mils centers. Covering most of the surface area of substrate 2 is a solder resist coating 6. Openings 8 in coating 6 expose those lands 4 to which it is desired to apply solder. Openings are typically about 10 ⁇ 6 mils. Specific chip geometries will obviously require larger/smaller openings.
- substrate 2 from FIG. 1 is shown in cross section.
- Solder resist coating 6 and copper lands 4 are also shown.
- Stencil 20 has an opening 22 which is large enough and configured so as to expose all of the copper lands 4 desired to receive solder.
- Solder paste 30 is applied through opening 22 and mask 20 by the action of squeegee 34 when it undergoes motion in the direction of arrow 38.
- the inventive technique comprises the following steps:
- solder paste stenciled through an appropriately dimensioned aperture in a mask followed by the application of heat and pressure, by a solder non-wettable platen, sufficient to reflow the solder.
- the opening 22 in mask 20 would be approximately so many mils.
- the heated platen 50 is then lowered into contact with solder 50 and remains for a time sufficient to melt solder 30.
- the required time is a function of solder composition. It has been found that for a eutectic composition of solder 0.5 sec is adequate.
- the solder non-wettable platen is then raised and conventional cleaning techniques are used for removing flux residue or any solder balls.
- platen, solder non-wettable blade, design may be made to correspond to any opening configuration.
- opening 22 in mask 20 may correspond to an entire footprint or to more than one footprint; and the solder non-wettable platen 50 may be serrated or grooved in areas that correspond to spaces between lands. Further, it may have plural limbs.
- solder mask that is 0.0025 inches thick around pads having a diameter of 0.0072 inches and 63/37 tin lead solder cream, an average solder height of 2.6 mils was obtainable.
- a heated solder non-wettable platen 50 may also be used in a subsequent step to assure plurality of solder on lands 4.
- solder foil 70 is provided with marginal perforations so that pin wheels 72 and 74 may be utilized for positioning fresh foil at each land site.
- Pin wheels 72 and 74 are shown for illustrative purposes only and those skilled in the art will understand that other mechanisms may be used for positioning or advancing solder foil to land sites.
- platen 52 includes individual platens in the form of pins 54 arranged to correspond to exposed lands 4.
- solder non-wettable platen assembly 52 including individual platen pins 54 is lowered in the direction of arrow 62 with sufficient force to pierce solder foil 70. Since pins 54 are hot, the action of the assembly as it is lowered punches foil 70 onto exposed lands 4.
- non-wettable platen 50 of FIGS. 3 and 4 include titanium and stainless steel.
- the individual platens of FIG. 5 may be made preferably of anodized aluminum.
- a solder non-wettable platen having an active surface in the same pattern as the land footprint may be combined into a single unit or multiplexed into a press-like apparatus. In that manner, plural footprints may have solder applied thereto simultaneously. In no case is precise alignment with respect to the platen and the footprint critical to our solder application technique which may be used for initial assembly or rework.
- a spring may be included in arm 64 to allow for compliant self-centering during operation of the solder non-wettable platen assembly for reflowing solder foil 70.
Abstract
Description
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US07/894,491 US5197655A (en) | 1992-06-05 | 1992-06-05 | Fine pitch solder application |
EP93303254A EP0573146A1 (en) | 1992-06-05 | 1993-04-26 | Fine pitch solder application |
JP5106337A JP2502912B2 (en) | 1992-06-05 | 1993-05-07 | Apparatus and method for soldering to fine pitch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/894,491 US5197655A (en) | 1992-06-05 | 1992-06-05 | Fine pitch solder application |
Publications (1)
Publication Number | Publication Date |
---|---|
US5197655A true US5197655A (en) | 1993-03-30 |
Family
ID=25403146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/894,491 Expired - Lifetime US5197655A (en) | 1992-06-05 | 1992-06-05 | Fine pitch solder application |
Country Status (3)
Country | Link |
---|---|
US (1) | US5197655A (en) |
EP (1) | EP0573146A1 (en) |
JP (1) | JP2502912B2 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5553538A (en) * | 1995-01-30 | 1996-09-10 | Motorola, Inc. | Method and apparatus for stencil printing printed circuit boards |
US5564617A (en) * | 1992-09-03 | 1996-10-15 | Lucent Technologies Inc. | Method and apparatus for assembling multichip modules |
US5616206A (en) * | 1993-06-15 | 1997-04-01 | Ricoh Company, Ltd. | Method for arranging conductive particles on electrodes of substrate |
WO1997023903A1 (en) * | 1995-12-22 | 1997-07-03 | Tti Testron, Inc. | Method of placing contacts onto a substrate |
WO1998008644A1 (en) * | 1996-08-26 | 1998-03-05 | Electro Scientific Industries, Inc. | Method and apparatus for forming termination stripes |
US5988487A (en) * | 1997-05-27 | 1999-11-23 | Fujitsu Limited | Captured-cell solder printing and reflow methods |
US6293456B1 (en) | 1997-05-27 | 2001-09-25 | Spheretek, Llc | Methods for forming solder balls on substrates |
US20020022000A1 (en) * | 2000-03-15 | 2002-02-21 | Kenichiro Suetsugu | Connecting material and connecting method |
US6423576B1 (en) | 1997-10-14 | 2002-07-23 | Amkor Technology, Inc. | Microelectronic device package having a heat sink structure for increasing the thermal conductivity of the package |
US6609652B2 (en) | 1997-05-27 | 2003-08-26 | Spheretek, Llc | Ball bumping substrates, particuarly wafers |
US6730358B2 (en) | 2001-02-22 | 2004-05-04 | Fujitsu Limited | Method for depositing conductive paste using stencil |
US20050150936A1 (en) * | 1997-05-27 | 2005-07-14 | Mackay John | Bumping electronic components using transfer substrates |
US7007833B2 (en) | 1997-05-27 | 2006-03-07 | Mackay John | Forming solder balls on substrates |
US20080087709A1 (en) * | 1997-05-27 | 2008-04-17 | Mackay John | Bumping Electronic Components Using Transfer Substrates |
EP2075802A1 (en) * | 2006-10-19 | 2009-07-01 | National Institute Of Advanced Industrial Science and Technology | Conductive pattern forming film, and conductive pattern forming method and conductive pattern forming apparatus for the conductive pattern forming film |
US7654432B2 (en) | 1997-05-27 | 2010-02-02 | Wstp, Llc | Forming solder balls on substrates |
US20110092066A1 (en) * | 1997-05-27 | 2011-04-21 | Mackay John | Bumping Electronic Components Using Transfer Substrates |
WO2011076402A1 (en) * | 2009-12-23 | 2011-06-30 | EISENBAU KRäMER GMBH | Pipe |
US20130240610A1 (en) * | 2012-03-14 | 2013-09-19 | Raytheon Company | Solder paste transfer process |
DE102009014582B4 (en) * | 2008-03-25 | 2014-04-24 | Fuji Electric Co., Ltd. | Method for producing a semiconductor device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997019466A1 (en) * | 1995-11-22 | 1997-05-29 | Fry's Metals, Inc. | Method and apparatus for forming solder bumps on a substrate |
JP2006317255A (en) | 2005-05-12 | 2006-11-24 | Tdk Corp | Sensor support mechanism, sensor support mechanism assembly, and rotary encoder |
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JPS54138371A (en) * | 1978-04-19 | 1979-10-26 | Nec Home Electronics Ltd | Solder supplying method |
GB2021027A (en) * | 1978-03-23 | 1979-11-28 | Gen Electric Co Ltd | Making solder joints on printed wiring beards |
US4273859A (en) * | 1979-12-31 | 1981-06-16 | Honeywell Information Systems Inc. | Method of forming solder bump terminals on semiconductor elements |
GB2138339A (en) * | 1983-04-19 | 1984-10-24 | Welwyn Electronics Ltd | Applying and securing solder-coated or solderable spheres to solderable or solder-coated terminal pads |
US4614837A (en) * | 1985-04-03 | 1986-09-30 | Allied Corporation | Method for placing electrically conductive paths on a substrate |
US4684055A (en) * | 1985-09-09 | 1987-08-04 | Harris Corporation | Method of selectively soldering the underside of a substrate having leads |
US4722470A (en) * | 1986-12-01 | 1988-02-02 | International Business Machines Corporation | Method and transfer plate for applying solder to component leads |
US4822979A (en) * | 1987-01-02 | 1989-04-18 | Dekam Cornelius T | Temperature controlled soldering iron with a unitary electrically heated soldering tip and thermocouple |
US4832255A (en) * | 1988-07-25 | 1989-05-23 | International Business Machines Corporation | Precision solder transfer method and means |
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Cited By (32)
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US5564617A (en) * | 1992-09-03 | 1996-10-15 | Lucent Technologies Inc. | Method and apparatus for assembling multichip modules |
US5616206A (en) * | 1993-06-15 | 1997-04-01 | Ricoh Company, Ltd. | Method for arranging conductive particles on electrodes of substrate |
US5553538A (en) * | 1995-01-30 | 1996-09-10 | Motorola, Inc. | Method and apparatus for stencil printing printed circuit boards |
WO1997023903A1 (en) * | 1995-12-22 | 1997-07-03 | Tti Testron, Inc. | Method of placing contacts onto a substrate |
WO1998008644A1 (en) * | 1996-08-26 | 1998-03-05 | Electro Scientific Industries, Inc. | Method and apparatus for forming termination stripes |
US6609652B2 (en) | 1997-05-27 | 2003-08-26 | Spheretek, Llc | Ball bumping substrates, particuarly wafers |
US20060208041A1 (en) * | 1997-05-27 | 2006-09-21 | Mackay John | Forming solder balls on substrates |
US6293456B1 (en) | 1997-05-27 | 2001-09-25 | Spheretek, Llc | Methods for forming solder balls on substrates |
US5988487A (en) * | 1997-05-27 | 1999-11-23 | Fujitsu Limited | Captured-cell solder printing and reflow methods |
US7654432B2 (en) | 1997-05-27 | 2010-02-02 | Wstp, Llc | Forming solder balls on substrates |
US20100089983A1 (en) * | 1997-05-27 | 2010-04-15 | Wstp, Llc | Forming Solder Balls on Substrates |
US20110092066A1 (en) * | 1997-05-27 | 2011-04-21 | Mackay John | Bumping Electronic Components Using Transfer Substrates |
US20050150936A1 (en) * | 1997-05-27 | 2005-07-14 | Mackay John | Bumping electronic components using transfer substrates |
US7007833B2 (en) | 1997-05-27 | 2006-03-07 | Mackay John | Forming solder balls on substrates |
US7837083B2 (en) | 1997-05-27 | 2010-11-23 | Wstp, Llc | Forming solder balls on substrates |
US6126059A (en) * | 1997-05-27 | 2000-10-03 | Fujitsu Limited | Captured-cell solder printing and reflow methods and apparatuses |
US7288471B2 (en) | 1997-05-27 | 2007-10-30 | Mackay John | Bumping electronic components using transfer substrates |
US20080087709A1 (en) * | 1997-05-27 | 2008-04-17 | Mackay John | Bumping Electronic Components Using Transfer Substrates |
US7819301B2 (en) | 1997-05-27 | 2010-10-26 | Wstp, Llc | Bumping electronic components using transfer substrates |
US7604153B2 (en) | 1997-05-27 | 2009-10-20 | Wstp, Llc | Forming solder balls on substrates |
US6423576B1 (en) | 1997-10-14 | 2002-07-23 | Amkor Technology, Inc. | Microelectronic device package having a heat sink structure for increasing the thermal conductivity of the package |
US20020022000A1 (en) * | 2000-03-15 | 2002-02-21 | Kenichiro Suetsugu | Connecting material and connecting method |
US7047635B2 (en) * | 2000-03-15 | 2006-05-23 | Matsushita Electric Industrial Co., Ltd. | Connecting material and connecting method |
US6730358B2 (en) | 2001-02-22 | 2004-05-04 | Fujitsu Limited | Method for depositing conductive paste using stencil |
US20100025088A1 (en) * | 2006-10-19 | 2010-02-04 | Toshihide Kamata | Conductive pattern forming film, and conductive pattern forming method and conductive pattern forming apparatus for the conductive pattern forming film |
EP2075802A1 (en) * | 2006-10-19 | 2009-07-01 | National Institute Of Advanced Industrial Science and Technology | Conductive pattern forming film, and conductive pattern forming method and conductive pattern forming apparatus for the conductive pattern forming film |
EP2075802A4 (en) * | 2006-10-19 | 2010-11-03 | Nat Inst Of Advanced Ind Scien | Conductive pattern forming film, and conductive pattern forming method and conductive pattern forming apparatus for the conductive pattern forming film |
US8278561B2 (en) | 2006-10-19 | 2012-10-02 | National Institute Of Advanced Industrial Science And Technology | Conductive pattern forming film, and conductive pattern forming method and conductive pattern forming apparatus for the conductive pattern forming film |
DE102009014582B4 (en) * | 2008-03-25 | 2014-04-24 | Fuji Electric Co., Ltd. | Method for producing a semiconductor device |
WO2011076402A1 (en) * | 2009-12-23 | 2011-06-30 | EISENBAU KRäMER GMBH | Pipe |
US20130240610A1 (en) * | 2012-03-14 | 2013-09-19 | Raytheon Company | Solder paste transfer process |
US8770462B2 (en) * | 2012-03-14 | 2014-07-08 | Raytheon Company | Solder paste transfer process |
Also Published As
Publication number | Publication date |
---|---|
JPH0637442A (en) | 1994-02-10 |
EP0573146A1 (en) | 1993-12-08 |
JP2502912B2 (en) | 1996-05-29 |
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